| Island Countries | 0 | - | 4.99 | 711,118 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,909 |
| European Countries by Clue | 0 | - | 4.92 | 183,827 |
| Countries by Military Spending | 0 | - | 4.93 | 178,378 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,251 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,598,782 |
| US States Quiz | 0 | - | 5.00 | 16,919,168 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,633,202 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,697 |
| World Capitals Quiz | 0 | - | 5.00 | 5,084,355 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,502 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,835,471 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,187 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,540,171 |
| Random Capital to Country | 0 | - | 4.99 | 2,594,849 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,780,160 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,905 |
| All Country Flags of the World | 0 | - | 5.00 | 3,680,752 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,105,664 |
| Countries that Start with B | 0 | - | 4.95 | 2,298,223 |
| Countries that Start with A | 0 | - | 4.98 | 2,166,833 |
| Countries of Africa | 0 | - | 5.00 | 2,545,205 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,759 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,692,961 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,842 |
| Countries that Start with C | 0 | - | 4.96 | 1,825,136 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,894 |
| Countries that Start with S | 0 | - | 4.98 | 1,757,659 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,501 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,590,990 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,965 |
| Countries that Start with G | 0 | - | 4.97 | 1,506,033 |
| Countries that Start with M | 0 | - | 4.97 | 1,383,878 |
| Countries that Start with E | 0 | - | 4.95 | 1,379,761 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,787 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,972 |
| Countries that Start with I | 0 | - | 4.92 | 1,290,334 |
| Countries that Start with P | 0 | - | 4.94 | 1,218,123 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,137 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,359 |
| Countries that Start with N | 0 | - | 4.93 | 1,119,733 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,722 |
| Countries that Start with L | 0 | - | 4.98 | 1,092,674 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,086 |
| Random Country to Capital | 0 | - | 4.98 | 922,870 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,336 |
| Biggest Cities in the United States | 0 | - | 4.94 | 981,233 |
| Asia Map Quiz | 0 | - | 4.99 | 919,777 |
| Countries that Start with U | 0 | - | 4.97 | 905,699 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,357 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,906 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,443 |
| Counties of England | 0 | - | 4.97 | 798,949 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,738 |
| Oceania Map Quiz | 0 | - | 4.98 | 653,102 |
| Top World Languages | 0 | - | 4.92 | 824,548 |
| Countries of South America | 0 | - | 5.00 | 927,645 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,773 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,812 |
| Countries that Start with K | 0 | - | 4.97 | 817,448 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,179 |
| US States with an Empty Map | 0 | - | 5.00 | 626,040 |
| Countries that Start with V | 0 | - | 4.98 | 610,176 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,901 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,402 |
| Flags of Asia Quiz | 0 | - | 4.99 | 615,927 |
| Countries that Start with D | 0 | - | 4.96 | 711,843 |
| Countries That Border Russia | 0 | - | 4.98 | 462,850 |
| One Border Countries | 0 | - | 4.98 | 469,971 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,406 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,601 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,458 |
| Countries with Four Letters | 0 | - | 4.99 | 423,380 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,149 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,573 |
| Countries Bordering France | 0 | - | 4.83 | 403,577 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,042 |
| Northernmost Countries | 0 | - | 4.99 | 362,054 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,056 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,569 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,699 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,823 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,165 |
| Landlocked Countries | 0 | - | 4.99 | 422,169 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,069 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,016 |
| Australia Map Quiz | 0 | - | 4.95 | 345,178 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,802 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,791 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,621 |
| Countries that Start with H | 0 | - | 4.96 | 606,307 |
| Countries that Start with J | 0 | - | 4.98 | 603,901 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,171 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,963 |
| "Land" Countries | 0 | - | 4.98 | 337,401 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,327 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,438 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,707 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,454 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,111 |
| Flags of Africa Quiz | 0 | - | 5.00 | 473,253 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,239 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,696 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,642 |
| Countries with Z | 0 | - | 4.98 | 291,497 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,426 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,234 |
| Flags of North and South America | 0 | - | 4.99 | 374,376 |
| EU Countries Quiz | 0 | - | 4.99 | 275,612 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,037 |
| Countries that Border China | 0 | - | 4.96 | 263,565 |
| French-Speaking Countries | 0 | - | 4.85 | 270,894 |
| Countries with Five Letters | 0 | - | 4.96 | 282,545 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,487 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,394 |
| Every Country Shape | 0 | - | 5.00 | 467,537 |
| Europe Capital to Country | 0 | - | 4.99 | 250,896 |
| Longest International Borders | 0 | - | 4.99 | 265,228 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,556 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,994 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,734 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,850 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,298 |
| Megacities on a World Map | 0 | - | 4.98 | 255,374 |
| World Currency Quiz | 0 | - | 4.92 | 304,271 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,128 |
| NATO Countries | 0 | - | 4.98 | 281,605 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,135 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,823 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,026 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,324 |
| Official Cities in the UK | 0 | - | 4.89 | 284,526 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,515 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,138 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,371 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,386 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,249 |
| Countries with Megacities | 0 | - | 4.99 | 264,669 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,773 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,352 |
| World Capitals by Map | 0 | - | 5.00 | 287,486 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,915 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,459 |
| World's Busiest Airports | 0 | - | 4.96 | 235,013 |
| Country Chain | 0 | - | 4.96 | 217,415 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,881 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,876 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,370 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,068 |
| Independence from Whom | 0 | - | 4.99 | 212,150 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,765 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,219 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,659 |
| Countries with Six Letters | 0 | - | 4.94 | 213,590 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,920 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,402 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,045 |
| Flags of Oceania | 0 | - | 5.00 | 260,562 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,836 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,721 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,854 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,605 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,841 |
| Countries in their Native Language | 0 | - | 4.99 | 199,082 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,359 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,811 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,550 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,939 |
| Monarchies of the World | 0 | - | 4.94 | 169,260 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,724 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,793 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,980 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,563 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,651 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,954 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,127 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,602 |
| Countries That End in Y | 0 | - | 4.91 | 185,881 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,815 |
| Olympic Host Countries | 0 | - | 4.98 | 201,123 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,255 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,650 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,211 |
| Every European Country Shape | 0 | - | 4.96 | 202,215 |
| Countries of the Middle East | 0 | - | 4.96 | 201,704 |
| Countries by Official Language | 0 | - | 4.95 | 195,289 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,145 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,672 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,786 |
| Counties of Ireland | 0 | - | 4.92 | 196,071 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,187 |
| Countries Bordering India | 0 | - | 4.98 | 163,566 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,763 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,978 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,163 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,694 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,245 |
| European Cities by Clue | 0 | - | 4.70 | 89,095 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,258 |
| Islands by Country #2 | 0 | - | 4.80 | 77,554 |
